Rotary internal-combustion engine.



J IUDD 'ITARY INTERNAL GOMBUSTION ENGINE.

APPLICATION FILED M`R I6. 19153 A 'K Patented Sept. 26,1916. I 2 SHEETS-SHEET I A1. `Juno. l ROTARY INTERNAL CQMBUSTION ENGINE.

APPLICATION FILED IAR. I6. I9I5.

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ROTARY INTERNAL-COMBUSTION ENGINE.

Specification of Letters Patent.

Patented Sept. 26, 1916.

Application led March 16, 1915. Serial No. 14,750.

To aZZwLom it 'may concern:

Be it known that I, JOHN JUDD, a subject of the King of Great Britain, and residing at Hart avenue, North Perth, Western Aus- 'tralia,l Commonwealth of Australia, have invented certain new' and useful Improvements in Rotary Internal-Combustion'Engines, of which the following is a specification. This invention relates to rotary internal combustion engines of the type wherein any number of radial cylinders rotate around a fixed crank shaft and the object of the invention is to provide an engine of such 5 rotating cylinder type which is not subjected to undue centrifugal strain and one which provides a highly efficient and self contained compact power motor adapted chiefly for industrial purposes.

Thisengine works on the four cycle principle and any number of cylinders may be employed; said engine being fitted with starting gear, carburetergignition means and other adjuncts which. are ordinarily eni- 5 ployed with internal combustion engines but for sake of clearness in description said adjuncts are not all-shown or described. Among other features of the invention one essential feature resides in the use of a peculiar timing construction hereafter described which causes a regularity in performance of the functions of the exhaust valves so as to allow of the needful actions of exhaust and compression. Thesev fea- 5 tures will be explained in relation with a tive cylinder engine and with the aid ofthe attached drawings wherein- Figure -lis a transverse sectional view showing one cylinder as connected up O with the fixed crank shaft and related parts. Fig. -2- is a side elevation in which the timing construction is shown in section as on line :1aof Fig. -l--.

Referring to said drawings o is the cylinder of usual make and being one of five cylinders which are radially arranged for rotation around the fixed crank shaft al said shaft being held in suitable bearings and secured to a base frame. ln this base frame may be placed the petrol or fuel chamber vfrom whence the petrol is fed to the carbureter by force feed means or said chamber may be placed at a suitably high .-point so as to permit said fuel being fed by gravity.

Each cylinder is provided with piston and connecting rod a2 and inlet and exhaust valves as aa and a4 also spark plugs as and contacts The novel features of the invention will now be explained in their relation with the construction of a fivevcylinder engine and in referring to the drawings Fb is a circular rotating distributing chamber for the petrol mixture and from said, ,chamber b the induction pipe b1 connects with the cylinder a by wayof 'the inlet valve a3 as seen clearly in` Fig. -l-. b2 which acts as bearing for the crank shaft and said chamber is sealed by a fixed flanged plate b3 so as to effect a gas tight joint thereat during the rotation of the chamber b and. said plate may be retained in position' by a suitable sprinr.

The exhaust escapesby valve at from the cylinders a and into a peripheral hollow rim (Z. 4shown broken away in Fie'. `Qf and from thence by pipe c into a hollow rotating chamber c1 from whence as indicated'by arrow it passes into the interior ot a rim wheel c2 and makes exit into the outer air through opening c3 formed in the closure plate c4 which latter fits neatly in the interior of rim c2 as seen in Fig. 1-.

The cylinders a may exhaust direct into i chamber c or said rim d may be divided up into cellular compartments corresponding in number to that of the cylinders employed and from each separate cell an exhaust pipe may lead to the chamber c1 aforesaid. This peripheral rim d also acts as a reinforcement means and renders the engine as a whole rigid in construction and imparts ease of running and counteracts any jai' resultant from the working of the engine. Between said rim d and the crank shaft a1 blades may be interposed to cause a current of air and act as cooling agents for the engine.

The invention further comprises a no vel timing construction consisting of an oiiter rotatable crank case as e said case being five sided and agreeable with the five cylinders employed. In this case e is housed the fixed cam f keyed on the shaft-tal The said chamber b has a sleeveand whose short arms g are adapted to engage against the ends of the tappet valve rods g1 and whereby the exhaust valves at are operated. These rods g1 are Pro' i vided with coiled springs g2 for maintaining tension against the arms g while the other ends of said rods operatively engage with the pivoted lever 93 for the opening of theexhaust valves a4 in the well known manner. The lower ends of said rods g1 loosely slide through openings made in thev case e. On the long arms j of the levers are carried pins or rollers il which are adapted to alternately travel within the vinner and outer paths or grooves jg and ja produced by the concentric rib f1 and eccentric cam path f2. construction consists of an escapement movement and referring to the position seen in Fig.V 2 its operation is as follows:-

'The crank case e rotating with the engine as a whole in the direction of the arrow and upon one of the levers as Z carried thereby meeting and engaging with the C pivoted rocker gate m causessaid lever Z to travel within the inner path jm and said' lever during its travel against said rocker m causes the latter to move to the 'position seen in dotted lines and which acthe inner path j2. The purpose of this alternate or escapement movement is tov regulate the compression andexhaust functions of the exhaust valves produce the aforesaid four cycle principle of operations in each cylinder alternately.

The exhaust valves communicate with and, may be housed within the peripheral rim d. and in which arrangement access doors are provided for 'cleanln'g or repair pur- This timing f 3 to travel within at and thus y poses or said valves may be placed voutside of said rim and arranged in a fside by side manner or position with the inlet valves.

What I claim as my invention and desire to secure by Letters Patent is:-

1. In a rotary internal combustion-engine of the character described, the combination of a fixed crank shaft Adisposed to have a series of cylinders rotate thereuround, each cylinder having an exhaust valve and an inlet valve and a sparking means, a fixed timing cam plate for rendering the function of the exhaust valve of each cylinder regular, said plate having concentric. ribs and ,ece centric cam grooves, said cam plate also having a rocker gate and a bridge pivotally mounted thereon, a case surrounding the said plate, concentric ribs and. cam, levers pivotally mounted in the case and projecting fromthe latter and operated by the cam plate ribs and grooves, the levers having short arms, and a valve rod coperating with the exhaust valve for regularly opening the latter, the one end of the said valve rod engaging the short arms of the levers at intervals.

2. In a rotary internal combustion enginepf the characterdescribed, a stationary crank shaft, cylindersl rotatably disposed with relation to said crank shaft, a rotary crank case, inlet and exhaust valves for the cylinders, .the Iexhaust valves having valve rods operatively extending inwardl into the crankcase, pivotallylmountecl oublearmed levers held in the crank 'case and operative to engage the ends of the said valve rods, and a timing means associated around the crank shaft and consisting'of a plate, a rocker and bridge both pivoted to the timing plate, and cammeans and cam grooves coperatin'g with the said double-armed levers to cause the latter to effect an engagement with and operation of the said valve rods at regular intervals. In testimony whereof I. have hereto affixed my signature in presence of two witnesses.

.4 J OI-IN JUDD. Witnesses:

RIGHARD SPARRW, SAMUEL-Emma. 

